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| | The changes of chlorophyll content and the activities of peroxidase, catalase and ascorbate peroxidase in cucumber cotyledons under chilling in the light were investigated to explore the relationship between chlorophyll degradation and enzymatic reaction. When cucumber seedlings were exposed to chilling and light, it was observed that chlorophyll content and catalase activity decreased markedly with the time (Fig. 1, 3), the activities of peroxidase and ascorbate peroxidase decreased during the first 24 hou... | | 黄瓜子叶在低温光照下处理时,随着时间的延长,Chl含量和CAT活性显著下降,POD和AsA-POD在开始24h活性亦有下降趋势,随后POD活性显著增加,而AsA-POD活性仅稍有提高。Chl含量的减少和CAT活性降低之间呈正相关,与POD活性的增加呈负相关。低温、光照处理的黄瓜子叶内Chl的降低可被亚胺环己酮(CHM)延缓,被AsA、Vit E、没食子酸丙酯(PG)和DCMU抑制,但被H_2O_2,乙醇酸钠和甲基紫精(MV)加速。 | | 文摘来源 | | No diffraction data of Sodium Hydroxyacetate(sodium glycolate) has been reported in X ray powder diffraction files. It is shown that the result of index research of the X ray powder diffraction pattern of sodium hydroxyacetate was refined carefully. The refined unit cell parameters for orthorhombic system of sodium hydroxyacetate are: a =1.058 1(1) nm, b =0.644 0(1) nm, c =0.530 3(1) nm, V =0.361 3(1) nm 3 , Z =4 , D x=1.802 g·cm -3 , D m=... | | 报道了羟基乙酸钠 X射线衍射数据的精确测定及指标化结果 .羟基乙酸钠为正交晶系 ,空间群为P2 1 2 1 2 ( 1 8) ,晶胞参数 :a=1 .0 581 ( 1 ) nm,b=0 .64 4 0 ( 1 ) nm,c=0 .53 0 3 ( 1 ) nm,V=0 .3 61 3 ( 1 ) nm3,Z=4 ,Dx=1 .80 2 g· cm- 3,Dm=1 .786g·cm- 3,M2 0 =3 8,F30 =51 ( 0 .0 0 88,68) ,F5 9=4 8( 0 .0 0 81 ,1 53 ) . | | 文摘来源 | | In this thesis, natrual mixed fatty acid, polythylenepolyamine, sodium glycolate are acted as main raw materials to synthesize a new type combined fatliquoring agent—LY—W which has good property in fatliquoring all kinds of medium and high grade garment leathers and suede leathers. | | 本文报道了以长链混和脂肪酸、多乙烯多胺、氯乙酸钠等为原料 ,经酰胺化、亲核取代、复配等工艺 ,合成了性能优良的结合型加脂剂—LY -W。 | | 文摘来源 | |   | | << 更多相关文摘 |
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